/Engine/Source/Editor/SceneOutliner/Public/ISceneOutlinerTreeItem.h
Get this item's children, if any.
const [TSet](API\Runtime\Core\Containers\TSet)< [TWeakPtr](API\Runtime\Core\Templates\TWeakPtr)< [ISceneOutlinerTreeItem](API\Editor\SceneOutliner\ISceneOutlinerTreeItem) > > & GetChildren() const